Senior Full-Stack Engineer (NestJS and React)
N-iX, Ukraine
About the job
N-iX is looking for a Senior Full-Stack Engineer to join a team modernizing a large ERP/PSA platform for a US-based software company.
This role combines hands-on development with technical decision-making, with approximately 55% backend and 45% frontend work. You will build new features, explore complex business logic, and help shape the platform’s evolution using TypeScript, NestJS, React, and Azure.
Responsibilities:
- Design and implement end-to-end features using NestJS and React.
- Analyze the existing codebase, understand business workflows, and contribute to the gradual modernization of the platform.
- Design and optimize relational database schemas and queries.
- Participate in system design, architecture discussions, and technical decision-making.
- Work directly with technical and business stakeholders to clarify requirements and translate business needs into solutions.
- Ensure solutions meet security, performance, scalability, and maintainability requirements.
- Contribute to code reviews, automated testing, and CI/CD improvements.
- Identify technical risks, manage dependencies, and proactively communicate delivery concerns.